how to change email used for market

i just bought a used HTC hero and when i go to the market it is showing a gmail address for the previous owner. i cant figure out how to change it to my own. i already set up my email account and its working fine i just cant get in the market because i dont know the guys password. how do i switch it to mine? thanks in advance

Its the only way..Be sure the first email address entered on the phone is the one you want to use for the Market & Google Chat

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I have an ATRIX 2 that was deleting apps any time I rebooted the phone. Finally had to talk to Motorola and the guy said I had to wipe the phone and create a new Google account because he said it might be the Google account that's causing the problem.

It looks like he is right, but I have a bunch of paid apps on my old Gmail email address that I'd like to get moved to my phone with my new Gmail email address. I certainly don't want to have to repurchase everything again.

There has to be a way to change the email address used in the market to allow this.
Anyone???
Thanks,
tl

I have an ATRIX 2 that was deleting apps any time I rebooted the phone. Finally had to talk to Motorola and the guy said I had to wipe the phone and create a new Google account because he said it might be the Google account that's causing the problem.

It looks like he is right, but I have a bunch of paid apps on my old Gmail email address that I'd like to get moved to my phone with my new Gmail email address. I certainly don't want to have to repurchase everything again.

There has to be a way to change the email address used in the market to allow this.
Anyone???
Thanks,
tl